JP6167616B2 - Ceiling material fall prevention structure and fall prevention method - Google Patents

Description

  The present invention relates to a ceiling material fall prevention structure and a fall prevention method. More specifically, the present invention relates to prevention of falling of a ceiling material attached via a suspension bolt.

  Conventionally, a hanger is attached to the lower end of a suspension bolt attached to a beam or slab, a field edge receiver is attached to the hanger, a field edge is attached to the field edge receiver, and a ceiling plate is screwed to the field edge to form the ceiling There are many cases. In the previous Great East Japan Earthquake, there have been reports of cases where ceiling materials (such as field ledges, field rims, and ceiling boards) attached via suspension bolts have fallen. The fall of the ceiling material due to the earthquake is caused by the fact that the ceiling board and the air conditioner have different ways of shaking, and the ceiling board with relatively large shaking collides with the wall.

  For example, in order to prevent a ceiling material from falling due to an earthquake or the like in an existing building, a method of installing a net (a net-like member) so as to cover the lower surface of the ceiling plate is relatively simple and effective. However, the prior art does not specifically propose a method for supporting the fall prevention net at an appropriate portion other than the ceiling material without removing the existing ceiling plate. If construction is performed after the ceiling plate is removed, not only construction costs and construction periods are required, but also indoor spaces and / or indoor facilities cannot be used over a relatively long construction period.

  The present invention has been made in view of the above-described problems. For example, the ceiling material can be prevented from falling without removing an existing ceiling plate, and the ceiling material attached via the suspension bolt can be prevented from falling. An object is to provide a structure and a fall prevention method.

In order to solve the above problems, in the first embodiment of the present invention, a fall prevention structure for preventing a ceiling material attached via a suspension bolt from falling,
A protective member covering the lower surface of the ceiling plate so as to prevent the ceiling material from falling;
A support member penetrating the ceiling plate, having one end attached to the suspension bolt and the other end supporting the protection member suspended ;
A horizontal member that supports the protective member from below;
The support member includes a bar-shaped member that penetrates the horizontal member and the ceiling plate and has male screws engraved at both ends thereof.

In the second embodiment of the present invention, a fall prevention method for preventing a ceiling material attached via a suspension bolt from falling,
Forming a through hole in the ceiling plate of the ceiling material;
Arranging a protective member for preventing the ceiling material from falling so as to cover the lower surface of the ceiling plate;
Attaching one end of a bar-shaped member penetrating through the through hole of the horizontal member and the ceiling plate and having male screws engraved at both ends to the suspension bolt while the protective member is supported from below by a horizontal member ; ,
And providing a method for preventing a ceiling material from falling, comprising: supporting the protection member by suspending it at the other end of the bar-like member .

  In the ceiling material fall prevention structure and fall prevention method according to the present invention, one end of the support member that penetrates the ceiling plate is attached to the suspension bolt, and the other end supports the protection member for preventing the ceiling material from falling. To do. As a result, in the present invention, for example, the protective member for preventing fall can be supported at an appropriate portion other than the ceiling material without removing the existing ceiling plate, and as a result, the ceiling material attached via the suspension bolt Falling can be prevented.

It is a figure which shows roughly the ceiling material fall prevention structure concerning embodiment of this invention. It is a figure which expands and shows the principal part of the ceiling material fall prevention structure concerning this embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. It is the figure which looked at arrangement | positioning of a horizontal member from the downward direction.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram schematically showing a ceiling material fall prevention structure according to an embodiment of the present invention. FIG. 2 is an enlarged view showing a main part of the ceiling material fall prevention structure according to the present embodiment. In the present embodiment, the present invention is applied to the prevention of falling of a ceiling member attached via a suspension bolt in an existing building.

  In the ceiling shown in FIG. 1, a hanger 12 is attached to the lower end of a suspension bolt 11 attached to a beam or slab (not shown) according to the prior art, and a field edge receiver 13 is attached to the hanger 12. A field edge 14 is attached to the field edge receiver 13, and a ceiling plate 15 is screwed to the field edge 14.

  As shown in FIG. 2, the ceiling material fall prevention structure according to the present embodiment is a net that covers the lower surface of the ceiling plate 15 so as to prevent the ceiling materials (13 to 15) attached via the suspension bolts 11 from falling. 1, a horizontal member 2 that supports the net 1 from below, a bar-shaped member 3 that penetrates the horizontal member 2 and the ceiling plate 15 and has male screws engraved at both ends, and is connected to the suspension bolt 11 and And a connecting member 4 in which a through hole is formed.

  As shown in FIG. 3 and FIG. 4, the connecting member 4 is in contact with one semi-cylindrical surface of the side surfaces of the suspension bolt 11 and has a generally planar shape, and the other half. A pair of bolts 4c that fasten the first member 4a and the second member 4b with the second member 4b in contact with the cylindrical surface and having an overall L-shaped cross-section and the suspension bolt 11 sandwiched from both sides. And have. A through hole (not shown) for the rod-like member 3 is formed in a portion extending in the horizontal direction of the second member 4b.

  As the horizontal member 2, for example, a flat plate having an elongated rectangular cross section can be used. The lower part of the main body of the rod-shaped member 3 penetrates the horizontal member 2 and the ceiling plate 15, and a nut 3 a that abuts on the lower surface of the horizontal member 2 is screwed into the male screw engraved at the lower end thereof. . As the nut 3a, a decorative nut in which a female screw is engraved in a non-through hole can be used. Further, the upper part of the main body of the rod-shaped member 3 passes through a through hole provided in the second member 4b of the connecting member 4, and a nut 3b is screwed into a male screw engraved on the upper end portion through which the rod-shaped member 3 is formed. Yes.

  In the present embodiment, as an example, the connecting member 4 (and hence the rod-like member 3) is not attached to each suspension bolt 11 provided at a predetermined pitch P in the vertical and horizontal directions, but the suspension bolt 11 and the connection member to which the connection member 4 is attached. 4 and the suspension bolts 11 that are not attached are set alternately. As a result, as shown in FIG. 5, the horizontal member 2 supports the net 1 from below while being arranged vertically and horizontally according to a pitch of 2 × P when viewed from below.

  In the construction of the ceiling material fall prevention structure according to the present embodiment, as an example, a through hole for the rod-like member 3 is formed in the existing ceiling plate 15. Moreover, the net | network 1 for the fall prevention of a ceiling material is arrange | positioned so that the lower surface of the ceiling board 15 may be covered. Then, the rod-shaped member 3 is passed through the through hole of the ceiling plate 15, and one end (upper end) of the rod-shaped member 3 is attached to the suspension bolt 11 via the connecting member 4. Specifically, the first member 4a and the second member 4b are fastened by a pair of bolts 4c with the suspension bolt 11 sandwiched from both sides, and pass through the through hole provided in the second member 4b of the connecting member 4. The nut 3b is attached to the male screw carved in the upper end part of the rod-shaped member 3 made.

  Furthermore, the net 1 is supported in a suspended state at the other end of the rod-shaped member 3. Specifically, with the net 1 supported from below by the horizontal member 2, the nut 3 a is attached to the male screw carved at the lower end portion of the bar-like member 3 penetrating the horizontal member 2 and the ceiling plate 15. In addition, the operation | work which arrange | positions the net | network 1 so that the lower surface of the ceiling board 15 may be covered, the operation | work which attaches the end of the rod-shaped member 3 to the suspension bolt 11 via the connection member 4, the rod-shaped member 3 which penetrated the horizontal member 2 and the ceiling plate 15. About the operation | work which attaches nut 3a to the lower end part of this, various operation | movement sequences are possible, without being limited to the above-mentioned order.

  As described above, in this embodiment, one end of the rod-shaped member 3 as a support member penetrating the ceiling plate 15 is attached to the suspension bolt 11 via the connecting member 4, and the other end is connected to the net 1 via the horizontal member 2. Suspended and supported. Therefore, it is possible to support the fall-preventing net 1 at a required pitch at an appropriate portion other than the ceiling material 15 without removing the existing ceiling plate 15, and thus the ceiling material attached via the suspension bolt 11. The fall of (13-15) can be prevented. As a result, in the present embodiment, not only can the construction cost and work period be reduced, but also the indoor space and / or indoor equipment can be used over the construction period.

  In the above-described embodiment, the net 1 having a net-like shape is used as a protective member that covers the lower surface of the ceiling plate 15 so as to prevent the ceiling material from falling. However, the present invention is not limited to this, and various forms are possible for the protective member for preventing the ceiling material from falling. For example, a planar member in which relatively small holes are distributed and a continuous planar member in which no holes are formed can be used as the protective member.

  In the above-described embodiment, the suspension bolts 11 to which the connection members 4 are attached and the suspension bolts 11 to which the connection members 4 are not attached are set alternately. However, the present invention is not limited to this, and various forms are possible for the position where the net 1 is suspended and supported.

  Moreover, in the above-mentioned embodiment, the horizontal member 2 and the ceiling plate 15 are penetrated and both ends are passed through the ceiling plate 15 as a supporting member that has one end attached to the suspension bolt 11 and the other end suspended from the net 1. The rod-shaped member 3 in which a male screw is engraved is used. However, the present invention is not limited to this, and various forms are possible for the specific configuration of the support member. For example, instead of the rod-shaped member 3 having male screws engraved at both ends, a bolt member that penetrates the horizontal member 2 and the ceiling plate 15 and is attached so that the head contacts the lower surface of the horizontal member 2 can be used.

  In the above-described embodiment, the first member 4a and the second member 4b of the connecting member 4 are fastened by the pair of bolts 4c with the suspension bolt 11 sandwiched from both sides. However, the present invention is not limited to this, and various forms are possible for the specific configuration of the connecting member for attaching one end of the support member to the suspension bolt.

  Moreover, in the above-mentioned embodiment, this invention is applied with respect to prevention of the fall of the ceiling material attached via the suspension bolt in the existing building. However, the present invention is not limited to this, and the present invention can be similarly applied to prevention of falling of a ceiling member attached via a suspension bolt in a new building.

1 Net (protective member)
2 Horizontal member 3 Bar-shaped member 4 Connecting member 11 Hanging bolt 12 Hanger 13 Field edge receiver 14 Field edge 15 Ceiling board

Claims (5)

A fall prevention structure for preventing the ceiling material attached via the suspension bolt from falling,
A protective member covering the lower surface of the ceiling plate so as to prevent the ceiling material from falling;
A support member penetrating the ceiling plate, having one end attached to the suspension bolt and the other end supporting the protection member suspended ;
A horizontal member that supports the protective member from below;
The ceiling member falling prevention structure according to claim 1, wherein the support member includes a bar-like member that penetrates the horizontal member and the ceiling plate and has male screws engraved at both ends . The ceiling material fall prevention structure according to claim 1, wherein the protection member has a net-like shape. The ceiling material fall prevention structure according to claim 1 or 2, further comprising a connecting member connected to the suspension bolt and having a through hole for the rod-shaped member . A fall prevention method for preventing a ceiling material attached via a suspension bolt from falling,
Forming a through hole in the ceiling plate of the ceiling material;
Arranging a protective member for preventing the ceiling material from falling so as to cover the lower surface of the ceiling plate;
Attaching one end of a bar-shaped member penetrating through the through hole of the horizontal member and the ceiling plate and having male screws engraved at both ends to the suspension bolt while the protective member is supported from below by a horizontal member; ,
Including a suspension support of the protection member at the other end of the bar-shaped member . The method for preventing a ceiling material from falling according to claim 4, wherein forming the through hole includes forming the through hole in the existing ceiling plate .

Images